Yes. My mother’s cousin who caught Polio as a child in the late 1930’s, became paralyzed and confined to a wheelchair and died in her early 40’s from complications.
From what I read, it disappeared because humans became immune and the virus burned itself out, like every other disease humankind encounters.
You need to find better reading material.
Love the last part
I’m sorry for your family’s loss
I do not have a clue of how to get across to those who didn’t live through the polio years just how bad it could get